CLADDING TUBES MADE OF FERRITIC/MARTENSITIC OR AUSTENITIC STEEL FOR NUCLEAR FUEL ELEMENTS/FUELS AND METHOD FOR SUBSEQUENTLY TREATING A FECRA PROTECTIVE LAYER THEREON THAT IS SUITED FOR HIGH TEMPERATURES

摘要

Cladding tubes made of ferritic/martensitic or austenitic steel for nuclear fuel elements/fuels are provided with an LPPS- FeCrAl layer on the coolant side, this layer being remelted on and melted onto the cladding tube by means of pulsed electron beams. This enables molten lead or molten lead alloys serving as a metallic coolant having a temperature of up to 800 °C to be contacted in a problem-free manner.